<template>
	<view>
		<view v-if="cart.length !== 0">
			<my-address></my-address>

			<view class="cart-title">
				<!-- 左侧的图标 -->
				<uni-icons type="shop" size="18"></uni-icons>
				<!-- 描述文本 -->
				<text class="cart-title-text">购物车</text>
			</view>

			<!-- 商品列表区域 -->
			<!-- uni-swipe-action 是最外层包裹性质的容器 -->
			<uni-swipe-action>
				<block v-for="(goods,i) in cart" :key="i">
					<!-- uni-swipe-action-item 可以为其子节点提供滑动操作的效果。需要通过 options 属性来指定操作按钮的配置信息 -->
					<uni-swipe-action-item :right-options="options" @click="swipeActionClickHandler(goods)">
						<my-goods :goods="goods" showNumber showRadio @num-change="changeGoodsCount"
							@radio-change="updateGoodsState($event)"></my-goods>
					</uni-swipe-action-item>
				</block>
			</uni-swipe-action>

			<my-settle></my-settle>
		</view>

		<view class="empty-cart" v-else>
			<text class="tip-text">空空如也~</text>
		</view>

	</view>
</template>

<script>
	import {
		mapState,
		mapMutations
	} from "vuex"
	import badgeMix from "@/mixins/tab-bar-badge.js"
	export default {
		mixins: [badgeMix],
		data() {
			return {
				options: [{
					text: '删除',
					style: {
						backgroundColor: '#dd524d'
					}
				}]
			}
		},
		methods: {
			...mapMutations('cart', ['updateGoodsState', 'updateGoodsCount', 'removeGoodsById']),
			// 修改商品数量
			changeGoodsCount(e) {
				this.updateGoodsCount(e)
			},
			// 删除商品
			swipeActionClickHandler(goods) {
				this.removeGoodsById(goods)
			}
		},
		computed: {
			...mapState('cart', ['cart'])
		}
	}
</script>

<style lang="less" scoped>
	.cart-title {
		height: 40px;
		display: flex;
		align-items: center;
		font-size: 14px;
		padding-left: 5px;
		border-bottom: 1px solid #efefef;

		.cart-title-text {
			margin-left: 10px;
		}
	}

	.empty-cart {
		display: flex;
		flex-direction: column;
		align-items: center;
		padding-top: 150px;

		.empty-img {
			width: 90px;
			height: 90px;
		}

		.tip-text {
			font-size: 12px;
			color: gray;
			margin-top: 15px;
		}
	}
</style>
